Hansen's Northwest Native Plant Database


Iris missouriensis (Western Iris)

 

Kingdom

 Plantae – Plants

Subkingdom

 Tracheobionta – Vascular plants

Superdivision

 Spermatophyta – Seed plants

Division

 Magnoliophyta – Flowering plants

Class

 Liliopsida – Monocotyledons

Subclass

 Liliidae

Order

 Liliales

Family

 Iridaceae – Iris family

Genus

 Iris L. – iris

Species

 Iris missouriensis Nutt. – Rocky Mountain iris

This rare and beautiful blue iris is found on the west side of the Cascades only in the Islands of Puget Sound.

It can be grown far beyond its native habitat, however, as it is hardy between USDA zones 5-10.

This iris likes regular watering and a generous helping of compost in its planting hole.

“Iris” is the Greek word for rainbow, a reference to the variegated flowers.

For a short comparison of northwest native iris, click here.

Photo below by Jim Peaco

   

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